convert String to Double

[azurovyhrosik]

Hi,
how can I conver String to Double?

It doesn't work:

double d = Double.valueOf(str).doubleValue();

CLDC 1.1
MIDP 2.1

[Norm]

It doesn't work:

Please explain.

[CJSLMAN]

I tried the following code (shamefully a cut & Paste) and it worked fine for me:

import java.io.*;
import java.lang.*;

public class StringToDouble{
  public static void main (String[] args) throws IOException{
    BufferedReader bff= new BufferedReader(new InputStreamReader(System.in));
    System.out.println("Enter numeric type string value:");
    String num = bff.readLine();
    try{
      double d = Double.valueOf(num.trim()).doubleValue();
      System.out.println("double d = " + d);
    }
    catch (NumberFormatException e){
      System.out.println("NumberFormatException: " + e.getMessage());
    }
  }
}

So...

• let's see your code
• what is the problem you're seeing?

CJSL

[azurovyhrosik]

Than you! I've found it :)
now it works:

n1 = Double.valueOf(a.getString()).doubleValue();

I had only:

n1 = Double.valueOf(a).doubleValue(); so that was the problem.

Thank for your help!!

[CJSLMAN]

Great!!! Now mark your post as solved.
CJSL

[Norm]

What is the type of the variable a?

One would assume that the type of a variable named str was String.